Furnace gas producer



I 8 fl 5 5 1 m z T m NP ES W A G Em N c W F May 15, 1923.

Filed April 22 1920 ATTORNEY 3 Sheets-Sheet l INVENTOR. Cf WE/VTZEL.

May 15, 1923. C. E. WENTZEL FURNACE GAS PRODUCER Filed April 22 1920 3 Sheets-Sheet 2 IN VEN TOR. 6 2? h/E/VTZ'L ATTORNEY May 15, 1923.

C. E. WENTZEL FURNACE GAS PRODUCER 1920 3 Sheets-Sheet 5 ATTORNEY Patented May 15, 1923.

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CLIFFORD WEHI'ZEL, or DAYTON, oHro, ASSIGNOR To INTERNATiONAL CLAY MACHINERY comrANy, or DAYTON, 01110, A CORPORATION or MAINE.

FURNACE GAS PRODUCER.

Application filedApril 22, 1920. Serial No. 375,714.

To all whom z'tmay concern: i i

Be it known that I, CLrrroRn E. WVENTZEL, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio have invented certain new and useful Improvements in Furnace Gas Producers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to furnace gas producers andthe like.

Ingas producers of the type with which the present invention is employed, the combustion chamber ofthe furnace is separated from the ash pit by a structure which is adapted to support the fuel and ashes in the combustion chamber, and which is movable:

to discharge the ashes therefrom into the ash pit. Arranged above the supporting structure are one or more tuyeres through which a mixture of air and steam isforced into the fuel to cause the combustion necessary to the production of the gas. As heretofore' con- ...stru cted, the tuyeres have been mounted on and secured to the supporting structure which was hinged to permit it to be tilted to cause the ashesto be discharged therefrom. This construction was open to various objections. It was heavy and difiicult to operate and also expensive to manufacture. In

- dumping the ashes a portion of the same will enter the tuyeres and the conduit leading thereto and if these are not removed more or less frequently they will choke up the easa ewa to such an extent as to revent the passage ofthe steam and air through the tnyeres. Further, when the supporting structure is tilted to dump the ashes all support for the bed of fuel in the combustion chamber is removed and there is danger, particularly with a free burnlng fuel, of

dumping the fire into the ash pit. This, of

course, would put the furnace out of operation until a new fire could be built and where r the furnace is connected with a kiln, the

Wars which was being fired would be-seriously damaged and probably ruined.

One of the objects of the present invention is to provide, in a device of this kind, a supporting structure which will be of light weight and easily operated.

A further object of the invention is to provide such a device having means for supporting the bed of fuel when the support ing structure is moved to dump the ashes, thus preventing the possibility of the fuel being dumped into the ashpit.

A- further objectof the invention is to provide such a device in which any ashes which may have entered the tuyeres will be automatically discharged therefrom when the sup-porting structure is moved into dumping position.

Other objects of the invention will appear as the mechanism is described in detail.

In the accompanying drawings Fig. l is a front elevation of a furnace gas producer embodying my invention; Fig. 2 is a transverse sectional view taken through the sup-- port ng structure and tuyeres; Fig. 3 is a longitudinal sectional view taken on the line 33 of Fig. 1; and Fig. 4 is a sectional view taken horizontally through the furnace showing the supporting structure and tuyeres in plan.

In these drawings I have illustrated one embodiment of my invention and have shown the same in connection with a furnace gas producer of a known construction, but it will be understood that the present embodiment has been chosen for the purpose of illustration only and that the invention may take various forms and may be applied to furnaces of various kinds.

In the construction here illustrated, the furnace comprises a combustion chamber 1 and an ash pit 2. Interp'osed between the ash pit, and the combustion chamber and adapted to support the fuel and ashes in the. combustion chamber is a structure 3 which is so arranged that it will normally close the passageway between the combustion chamber and the ash pit. The opening, or passageway, which is closed by this supporting structure may be formed in any suitable manner, as by a proper arrangement of the masonry, or by a supplemental structure carried by the masonry. In the present instance I have employed a bed plate 4: which is supported at its edges on the masonry at the top of the ash pit, the masonry being provided with suitable ledges to form supports therefor. This bed plate is provided with an opening 5 of large area "porting structure.

beneath the central portion of the combustion chamber, and the supporting structure 8, when in position in this opening, will support the bulk of the ashes and fuel in the combustion chamber. The supporting structure is movable into and out of its position in the opening in the bed plate so that the ashes which have accumulated thereon may be dumped from time to time. Preferably the structure is hinged to the bed plate so that it can have a swinging movement into a tilted, or dumping, position, which'will cause the ashes to be discharged therefrom. As here shown, the bed plate and supportingstructure are provided atadjacent edges with lugs 6 and 7 adapted to receive a hinge pin, or shaft, 8. To facilitate the return of the supporting structure to its normal, or closed, position the lugs 7 thereof are rigidly secured to the hinge pin, or shaft, 8 and the latter projects to the outer end of the furnace where it may be engaged by a suitable instrument for rotating the same and thus raising the sup As here shown, the end of the shaft is squared to receive a long handled wrench or like instrument. This supporting structure may be retained in its closed position by any suitable means but I prefer to arrange a locking device at the free edge of the structure and, as here shown, a. locking rod 9 1S journaled in bearing lugs 10 rigidly secured to and extending beneath the bed plate 4 and is provided between said bearings with an offset portion 11 adapted to be moved beneath the edge of the supporting structure. The locking rod extends to the outer end of the furnace and is provided with a handle 12 by means of which it may be actuated. The supporting structure is provided with a stop to limit the inward movement of the offset portion of the locking rod. and this stop is so arranged that when said locking rod is in engagement therewith the offset portion thereof will lie slightly beyond a vertical plane extending through the axis of its rotation, thus causing the thrust exerted upon the rod by the supporting structure to tend to move the rod inwardlyand thereby preventing it from being forced outwardly and releasing the structure. The supporting structure 3 is here shown as a metal plate,

' which, for the sake of lightness, is comparatively thin and is reinforced by a plurality of transverse and longitudinal ribs 13 and '14, and one of the ribs 1a constitutes-the stopfor the locking rod.

- Arranged above the supporting structure are one or more tuyeres 15 which may, be of any suitable number and construction. In the present. instance, I have employed two tuyeres, which extend lengthwise of the furnace and are preferably supported independently of the supporting structure 3. In the present construction the tuyeres.

the tuyeres with relation to the opening 5 and retain them in their proper positions I have provided each tuyere at its rear end with a longitudinally extending lug 16 having therein a slot '17 to embrace a stud 1S rigidly secured to and extending up wardly from the bed plate 4. Preferably the slot is flared to facilitate its engagement with the stud and the stud is provided with a head to engage the lug and hold the tuye're against movement, otherthan an outward longitudinal movement. The tuyeres at their forward ends rest upon the bed plate and are provided with longitudinal tubular extensions 19 constituting nozzles into which a jet of steam is discharged.

The arrangement of the nozzles and the manner of discharging the steam into the tuyeres may. take various forms, but in the present construction Ihave formed the nozzles 19 for the two tuyeres independent one of the other and have provided a steam jet 20 for each nozzle, these steam jets being carried by a pipe 21 which can be swung port the same in their proper positions.

Each tuyere 15 is provided with openings to discharge into the mass of ashes and fuel resting upon the supporting structure and, in the present instance, these openings are formed along the lower edges of the lateral walls thereof, as shown at 23, and if desired the side walls of the tuyeres may be provided with depending portions 24 which rest upon the supporting structure 3 to sup port the intermediate portions otthe tuyeres and which divide the openings 23 into a plurality of parts. The tuyeres are provided in their bottoms with openings which are normally closed by the supporting structure 3, when the latter is in its closed position, and preferably the, tuyeres are bottomless. a

It will be apparent from'thc foregoing description that when it is desired to remove the ashes from the combustion-chamber the supporting structureis moved out of the opening 5 in the bed plate 4, thus permitting the ashes to drop into the ash pit. This movement of the supporting structure also opens the bottoms ofthe tuyeres and'permits any ashes which may have entered the same through the openings 23, to be disdumping position and thereby prevent the bed of fuel from dropping into the ash pit along with the ashes. It willalso be apparent that the mechanism is very simple in its construction and consequently inexpensive to manufacture, and further, that the supporting structure 3 is of light weight and can be easily restored to its normal position after the ashes have been dumped.

Vhile I: have shown and described one embodiment of my invention I wish it to be understood that Ido not desire to be limited to the details thereof as various modifications may occur to a person skilled in the art.

Having now fully described my invention what I claim as new and desire to secure by Letters Patent, is:

1. The combination with a furnace comprising a combustion chamber and an ash pit, of a structure interposed between said combustion chamber and said ash pit to support fuel and ashes in said combustion chamber, said structure being movable to permit the ashes thereon to be dumped from the combustion chamber into the ash pit, a tuyere arranged above and extending across said structure and having openings leading into the ashes and fuel on said structure, a

nozzle arranged in line with said tuyere,

and a steam jet discharginginto said nozzle.

2. The combination with a furnace comprising a combustion chamber and an ash pit, of a structure interposed between said combustion chamber and said ash pit to sup port fuel and ashes in said combustion chamber, said structure being movable to permit the ashes thereonto be dumped from the combustion chamber intothe ash pit, and a tuyere arranged above and extending across said movable structure and supported inclependently thereof.

3. The combination with a furnace comprising a combustion chamber and an ash pit connected one to the other by a passageway, of a structure arranged to close said passageway and to support fuel and ashes in said combustion chamber, said structure being movable to permit. the ashes thereon to be dumped from the combustion chamber into said ash pit, and tuyeres extending across said passageway above said movable structurev and supported independently of said structure to constitute fuel supporting means when said movable structure has been moved to its dumping position.

4. The combination with a furnace comprising a combustion chamber and an ash pit, of a structure interposed between said combustion chamber and said ash pit to support fuel and ashes in said combustion chamber, said structure being movable to permit the ashes thereon to be dumped from the combustion chamber into the ash pit, and a tuyere arranged above and extending across said structure, supported independently thereof, and having an opening in the bottom thereof adapted to be closed by said movable structure when the latter "is in its normal position.

5. The combination with a furnacecomprising a combustion chamber and an ash pit, of a structureinterposed between said combustion chamber and said ash pit to support fuel and ashes in said combustion chamber, said structure beingmovable to permit the ashes thereon tobe dumped from the combustion chamber into the ash pit, a tuyere arranged above and extending across said movable structure and having a tubular .extension projecting therefrom, and a steam jet arranged to discharge into said tubular extension.

6. The combination with a furnace comprising a combustion chamber and an ash pit, of a structure interposed between said combustion chamber and said ash pit to sugport fuel and ashes in said combustion chamber, said structure being movable to permit the ashes thereon to be dumped from the combustion chamber into theash pit, a tuyere arranged above said structure and supported independently thereof, said tu-' yere being provided withlaterally extending openings and havingparts intermediate its length to engage said supporting structure when the latter is in its normal position.

7. The combination with a furnace comprising a combustion chamber and an ash pit, of abed plate interposed between said ash pit and said combustion chamber and having an opening therein, a structure movable into and out of. a position to close said opening and adapted to support fuel and ashes in said combustion chamber, and a tuyere supported by said bed plate, extending across said opening and having outlets arranged to discharge into the fuel and ashes on said movable structure.

8. The combination with a furnace comprising a combustion chamber and an ash pit, of a bed plate interposed between said ash pit and said combustion chamber and having an opening therein, a structure movable into and out of a position to close said opening and adapted to support fuel and ashes in said combustion chamber, and a tuyere supported by said bed plate and exported independently thereof.

10. In a device of the character described, a structure normally arranged. to support fuel and ashes, said structure being hinged at oneedge thereof to permit it to be moved from its supporting position to cause the ashes thereon to be dumped, and a tuyere arranged above and adjacent to the normal position of said supporting structru'e, extendin across the same and supported indepeiidently thereof.

11. In a device of the character described, a structure arranged normally to support fuel and ashes, said structure beinghinget at one edge thereof to permit it to be moved from its supporting position to cause the ashes thereon to be dumped, and a tuyere arranged above and adjacent to the normal position of said supporting structure, extending across the same and supported independently thereof, said structure having an opening in the bottom thereof arranged to be closed by said supporting structure when the latter is in its normal position.

12'. In a device of the characterdescribed, a bed plate having an opening therein, a closure for said opening adapted to support fuel and ashes and mounted for movement away from said opening to permit the ashes to be dumped, and a tuyere supported on said bed plate above said opening.

.13. In a device of the character described, a bed plate having an opening therein, a closure for said opening adapted to support fuel and ashes and mounted for movement away from said opening to permit the ashes to be dumped, and a tuyere .supported on said bed plate above said opening, said tuyere having an opening in the bottom thereof arranged to be closed by said closure when the latter is in its closed position.

1a. In a device of the character described, a bed plate having an opening therefor, a closure hinged at one edge to said bed plate and adapted to support fuel and ashes, means for retaining said closure normally in its supporting position, and a tuyere mounted on said bed plate and extending across said in its closed position,'to support fuel and ashes, a locking rod extending along the other edge-of saidclosureand having an osset portion adapted to engagesaid closure to retain thesame in its closedposition,'- and a tuyere supported by said bed plate above said opening. v i Y i 16. In a device of the character. described, a bed plate having an openingtherein, a movable closure for said openingadapted to support fuel and ashes, a tuyere arranged above and extending acrosssaid supporting structure, a nozzle for said tuyere supported by said bed plate and arranged in alinement with said tuyere, and. a steam jet discharging into said nozzle. w

17. In a device of the character described, astructure adapted to support fuel and ashes and movable into a position to cause the ashes thereon to be discharged therefrom, a tuyere supported above and extending across saidmovable structure, a nozzle supported independently of said movable structure and arranged in line, with said tuyere," and a steam jet discharging into said nozzle.

18. In a device ofthe character described, a bed plate having an opening therein, a closure for said opening hinged at one edge to said bed plate and adapted to support fuel and ashes when in its'closed positio'n,'a plurality of tuyeres supported on said bed plate and extending across the opening therein and adapted to constitute grate bars when said closure is moved to its open position, and means for discharging air and steam into said tuyeres.

19. In a device of the character described,-

a bed plate having an opening therein, a'closure for said opening hinged atone edge of said bed plate and adapted to support fuel and ashes when in its closed position,a plurality of tuyeres supported by said bed' plate, extending across said opening, and adapted to form grate bars when said closure is in its open position, each -of said tuyeres having an opening in thebottom thereof arranged to be closed by said closure when the latter" is in; its closed position, and means for dischargingsteam and air into said tuyeres.

20. The combination with a furnace com.- prising a combustion chamber and an ash pit, of a. bed plate interposed between said ash pit and said-combustion chamber and having anopening therein, a structure movable into and out of a position to close said opening and adapted, when in its closed position, to support fuel and ashes, a-tuyre extending acrosssaid opening, and means for removably supporting said tuyere on said bed plate. w i

21. The combination with a furnace com able into and .out of a position to close said of a bed plate interposed between said ash pit and said combustion chamber and having an openlng thereln, a structure movable into and out of a position to close said open ing and adapted, when in its closed position, to support fuel and ashes, a tuyereremovably supported by said bed plate and extending across said opening, said tuyere having a slotted portion at its inner end and said bed platehaving a stud to enter said slotted portion, said tuyere having a tubular extension at the forward endthereof,

and said bed plate having a seat to receive said tubular extension.

23. The combination with a furnace comprising a combustion chamber and an ash pit, of a bed plate interposed between said ash pit and said combustion chamber and having an opening therein, a tuyere extending across said opening, said tuyere and said bed plate having interlocking parts in the rear of said opening and said bed plate having a seat in front of said opening to receive said tuyere.

2 The combination with a furnace comprising acombustion chamber and an ash pit, of a structure interposed between said combustion chamber and said ash pit to support fuel and ashes in said combustion chamber, said structure being movable to permit the ashes thereon to be dumped into the ash pit, a tuyere arranged aboveand eX- tending across said structure and having openingsleading into the ashes and fuel on said structure, a nozzle communicating with said tuyere, and a steam jet discharging into said nozzle, said movable structure and said above said movable til tuyere being so arranged with relation one to the other that the movement of said structure into dumping position will cause the ashes which have accumulated in said tuyere .to be discharged therefrom.

25. In combination witha furnace comprising a combustion chamber and an ash pit, of a device interposed between said combustion chamber and said ash pit to support fuel and ashes in said combustion chamber, the supporting surface of said structure having a movable portion, a tuyere arranged portion having openings leading into the ashes and fuel of said supporting device, said tuyere being so mounted. with relation to said movable portion that whenthe latter is moved from its closed position it will move away from said tuyere, and means for delivering steam to said tuyere.

26. In combination with a furnace comprising a combustion chamber and ash pit, of a device interposed between said combustion chamber: and said ash pit to support fuel and ashes in said combustion chamber, the supporting surface of said structure comprising a hinged portion, a tuyere arranged above said hinged portion and having openings leading into the ashes and fuel above said supporting device, said tuyere being so mounted with relation to said hinged portion that when the latter is moved about its axis it will move away from said tuyere,

and means for delivering steam to said tuyere.

27. In combination with a furnace comprising a combustion chamber and an ash pit, a structure interposed between said combustion chamber and said ash pit to support fuel-and ashes in said combustion chamber, the supporting surface of said structure comprising a movable portion, and a tuyere arranged above said movable portion of said structure, said movable portion being capable of movement relative to said tuyere.

In testimony whereof, I afiix my signature hereto.

CLIFFORD E. WEITIZEL. 

